Heating substrate for thermal print head and manufacturing method of heating substrate

Abstract

The invention provides a heating substrate for a thermal print head. The heating substrate comprises an insulating substrate, wherein a bottom glaze layer is arranged on the surface of the insulatingsubstrate in whole or in part, a common electrode and an individual electrode are arranged on the surface of the insulating substrate and the bottom glaze layer, a heating resistance body is configured between the two electrodes in the main printing direction, the heating resistance body is connected to one end of the common electrode in the sub-printing direction, and a printing power source is connected to the other end of the common electrode ; the heating resistance body is connected to one end of the individual electrode in the sub-printing direction, a control IC is connected to the other end of the individual electrode; the surfaces of the heating resistance body, the common electrode and a part of the individual electrodes are covered with an insulating protective layer, a transition layer is arranged on the protective layer, and a hydrophobic and oleophobic functional layer is arranged on the transition layer, and the functional layer is made of an inorganic material, the protective layer, the transition layer and the functional layer form a surface composite layer. The heating substrate for the thermal print head has high hydrophobic and oleophobic ability, the phenomenonof carbon deposition and paper sticking in the printing process can be improved, and the service life of the thermal print head can be prolonged.

Description

technical field [0001] The invention relates to the field of thermal printing, in particular to a heating substrate for a thermal printing head and a manufacturing method thereof. Background technique [0002] As we all know, when the thermal print head is working, the heat of the print head causes the heat-sensitive medium to develop color. When heated, the color-forming layer of the heat-sensitive medium is in a molten state. The medium is always in contact with the print head during the cooling process, and the melt of the chromophoric layer will stick to the print head to form carbon deposits, which will affect the printing density and product life; in addition, the cooling of the heat-sensitive medium melt will also cause thermal Print head sticking paper, the specific performance is that the heat-sensitive medium will stick to the print head to varying degrees, and cannot pass through the print head smoothly, resulting in missing lines and noise in printing. Carbon de...

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Problems solved by technology

[0006] The invention patent application with the patent application number 201510101328.7 discloses a method for preparing a wear-resistant hydrophobic nanocomposite film, but the substrate for preparing the composite film in this patent application is a conductive metal, and it is not mentioned on an insulating substrate similar to a thermal print head A method for preparing a wear-resistant hydrophobic film layer, and the oleophobic property of the film layer is not mentioned

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